Burmese python in terms of giant snakes/being too big for me (for many reasons). Boelean's Python for out of budget and probably too big. Water Monitor or Tegu for lizards that need enclosures that are too big and/or need more time and work than I have.
I would also like a hognose snake, but I am concerned about the rear-fanged venom thing, even though they rarely bite. I had a kidney transplant and do not need to risk a bite and see what my reaction could be.
Venomous reptiles I want are a Green Mamba and Gila Monster. The latter isn't happening and the former scares the heck out of me. Beautiful animal though.